package com.lsl.facade_pattern.example;

/**
 * description:
 *
 * @author: liushengli
 * data: 2022/11/30
 */
//屏幕
public class Scree {

    private Scree() {
    }
    private static Scree scree = new Scree();

    public static Scree getInstance(){
        return scree;
    }

    public void up(){
        System.out.println("...Scree up...");

    }
    public void down(){
        System.out.println("...Scree down...");

    }
    public void focus(){
        System.out.println("...Scree focus...");

    }
}